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<a href="#define-members">宏定义</a> &#124;
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<div class="title">chartran.c 文件参考</div>  </div>
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<p><a href="a00932_source.html">浏览源代码.</a></p>
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宏定义</h2></td></tr>
<tr class="memitem:a23d6d6764e9a49ac3cb76454ef6b8782"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00932.html#a23d6d6764e9a49ac3cb76454ef6b8782">THREAD_CODEPAGE</a>()&#160;&#160;&#160;(GetClientInfo()-&gt;CodePage)</td></tr>
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<tr class="memitem:a64fbb83e8ca07b69c4724cbb1ae1ceb3"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00932.html#a64fbb83e8ca07b69c4724cbb1ae1ceb3">IS_ACP</a>(cp)&#160;&#160;&#160;(((cp) == NlsAnsiCodePage) || ((cp) == CP_ACP))</td></tr>
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<tr class="memitem:a00abbc2e24d5fa7f95368fca65306e10"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00932.html#a00abbc2e24d5fa7f95368fca65306e10">NWCH</a>&#160;&#160;&#160;2</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
函数</h2></td></tr>
<tr class="memitem:a5263bfa6996ca18d7d5250c59c2e3510"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00932.html#a5263bfa6996ca18d7d5250c59c2e3510">__declspec</a> (dllimport)</td></tr>
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<tr class="memitem:a75c1a992a8b7553edfca3a3bfb6d3539"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00932.html#a75c1a992a8b7553edfca3a3bfb6d3539">MBToWCSEx</a> (WORD wCodePage, LPCSTR pAnsiString, int nAnsiChar, LPWSTR *ppUnicodeString, int cchUnicodeString, BOOL bAllocateMem)</td></tr>
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<tr class="memitem:a541a4d80afc3abe77692be2160e0f354"><td class="memItemLeft" align="right" valign="top">BOOL&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00932.html#a541a4d80afc3abe77692be2160e0f354">RtlWCSMessageWParamCharToMB</a> (<a class="el" href="a00563.html#a074685e97e89d6aa2accdfcb82328699">DWORD</a> msg, PDWORD pWParam)</td></tr>
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<tr class="memitem:a422181d432442f3ca223ed68ff5585fb"><td class="memItemLeft" align="right" valign="top">BOOL&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00932.html#a422181d432442f3ca223ed68ff5585fb">RtlMBMessageWParamCharToWCS</a> (<a class="el" href="a00563.html#a074685e97e89d6aa2accdfcb82328699">DWORD</a> msg, PDWORD pWParam)</td></tr>
<tr class="separator:a422181d432442f3ca223ed68ff5585fb"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a47585c80672490cbfb5c1bdd5f4cc874"><td class="memItemLeft" align="right" valign="top">VOID&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00932.html#a47585c80672490cbfb5c1bdd5f4cc874">RtlInitLargeAnsiString</a> (<a class="el" href="a00365.html#a30bfbeae5aa9511b0d3e797511eba5a9">PLARGE_ANSI_STRING</a> plstr, LPCSTR psz, <a class="el" href="a03608.html#afd1a0e78d1f88954d93e48ab3821781f">UINT</a> cchLimit)</td></tr>
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<tr class="memitem:a4dddfac60ddaa5a11f91719826b7b270"><td class="memItemLeft" align="right" valign="top">VOID&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00932.html#a4dddfac60ddaa5a11f91719826b7b270">RtlInitLargeUnicodeString</a> (<a class="el" href="a00365.html#a426c6d3b3fa0c69f73b55f476602e672">PLARGE_UNICODE_STRING</a> plstr, LPCWSTR psz, <a class="el" href="a03608.html#afd1a0e78d1f88954d93e48ab3821781f">UINT</a> cchLimit)</td></tr>
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<h2 class="groupheader">宏定义说明</h2>
<a id="a64fbb83e8ca07b69c4724cbb1ae1ceb3"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a64fbb83e8ca07b69c4724cbb1ae1ceb3">&#9670;&nbsp;</a></span>IS_ACP</h2>

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          <td class="memname">#define IS_ACP</td>
          <td>(</td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">cp</td><td>)</td>
          <td>&#160;&#160;&#160;(((cp) == NlsAnsiCodePage) || ((cp) == CP_ACP))</td>
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<a id="a00abbc2e24d5fa7f95368fca65306e10"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a00abbc2e24d5fa7f95368fca65306e10">&#9670;&nbsp;</a></span>NWCH</h2>

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          <td class="memname">#define NWCH&#160;&#160;&#160;2</td>
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</div>
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<h2 class="memtitle"><span class="permalink"><a href="#a23d6d6764e9a49ac3cb76454ef6b8782">&#9670;&nbsp;</a></span>THREAD_CODEPAGE</h2>

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          <td class="memname">#define THREAD_CODEPAGE</td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td>&#160;&#160;&#160;(GetClientInfo()-&gt;CodePage)</td>
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<h2 class="groupheader">函数说明</h2>
<a id="a5263bfa6996ca18d7d5250c59c2e3510"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a5263bfa6996ca18d7d5250c59c2e3510">&#9670;&nbsp;</a></span>__declspec()</h2>

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          <td class="memname">__declspec </td>
          <td>(</td>
          <td class="paramtype">dllimport&#160;</td>
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<p class="definition">在文件 <a class="el" href="a00932_source.html">chartran.c</a> 第 <a class="el" href="a00932_source.html#l00016">16</a> 行定义.</p>
<div class="fragment"><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;{</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    ULONG nCharsInAnsiString;</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="preprocessor">#ifdef _USERK_</span></div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    <a class="code" href="a00953.html#a392e62da233ed3e2f7c3fd4f487a3896">INT</a> iCharsInAnsiString;</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="preprocessor">#endif // _USERK_</span></div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160; </div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    <span class="keywordflow">if</span> (nAnsiChar == 0 || cchUnicodeString == 0) {</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;        <span class="keywordflow">return</span> 0;      <span class="comment">// nothing to translate or nowhere to put it</span></div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;    }</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160; </div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="comment">     * Adjust the cchUnicodeString value.  If cchUnicodeString == -1 then the</span></div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="comment">     * string pointed to by pUnicodeString is NUL terminated so we</span></div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="comment">     * count the number of bytes.  If cchUnicodeString &lt; -1 this is an</span></div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;<span class="comment">     * illegal value so we return FALSE.  Otherwise, cchUnicodeString is</span></div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="comment">     * set and requires no adjustment.</span></div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    <span class="keywordflow">if</span> (cchUnicodeString == -1) {</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;        cchUnicodeString = (wcslen(pUnicodeString) + 1);</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (cchUnicodeString &lt; -1) {</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;        <span class="keywordflow">return</span> 0;     <span class="comment">// illegal value</span></div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    }</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160; </div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;<span class="comment">     * Adjust the nAnsiChar value.  If nAnsiChar == -1 then we pick a</span></div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="comment">     * value based on cchUnicodeString to hold the converted string.  If</span></div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="comment">     * nAnsiChar &lt; -1 this is an illegal value so we return FALSE.</span></div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="comment">     * Otherwise, nAnsiChar is set and requires no adjustment.</span></div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;    <span class="keywordflow">if</span> (nAnsiChar == -1) {</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;        <span class="keywordflow">if</span> (bAllocateMem == FALSE) {</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;            <span class="keywordflow">return</span> 0;  <span class="comment">// no destination</span></div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;        }</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;        nAnsiChar = cchUnicodeString * <span class="keyword">sizeof</span>(USHORT);</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (nAnsiChar &lt; -1) {</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;        <span class="keywordflow">return</span> 0;     <span class="comment">// illegal value</span></div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;    }</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160; </div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;    <span class="keywordflow">if</span> (bAllocateMem) {</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="comment">         * We need to allocate memory to hold the translated string.</span></div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;        *ppAnsiString = (LPSTR)<a class="code" href="a00035.html#aa4c5df31e4454c1b801c9cc8dc49ed7f">UserRtlAllocMem</a>(nAnsiChar);</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;        <span class="keywordflow">if</span> (*ppAnsiString == NULL) {</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;            <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;        }</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;    }</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160; </div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;<span class="comment">     * translate Unicode string pointed to by pUnicodeString into</span></div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;<span class="comment">     * ANSI and store in location pointed to by pAnsiString.  We</span></div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;<span class="comment">     * stop translating when we fill up the ANSI buffer or reach</span></div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;<span class="comment">     * the end of the Unicode string.</span></div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160; </div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;<span class="comment">     * if the target multibyte codepage is eqaul to ACP, Call faster Rtl function.</span></div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="a00932.html#a64fbb83e8ca07b69c4724cbb1ae1ceb3">IS_ACP</a>(wCodePage)) {</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160; </div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;        NTSTATUS Status;</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160; </div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;        Status = RtlUnicodeToMultiByteN(</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;                        (PCH)*ppAnsiString,</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;                        nAnsiChar,</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;                        &amp;nCharsInAnsiString,</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;                        (PWCH)pUnicodeString,</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;                        cchUnicodeString * <span class="keyword">sizeof</span>(WCHAR));</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;<span class="comment">         * If the ansi buffer is too small, RtlUnicodeToMultiByteN()</span></div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;<span class="comment">         * returns STATUS_BUFFER_OVERFLOW. In this case, the function</span></div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;<span class="comment">         * put as many ansi characters as specified in the buffer and</span></div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;<span class="comment">         *  returns the number by chacacters(in bytes) written. We would</span></div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;<span class="comment">         * like to return the actual byte  count written in the ansi</span></div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;<span class="comment">         * buffer rather than returnning 0 since callers of this function</span></div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;<span class="comment">         * don&#39;t expect to be returned 0 in most case.</span></div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160; </div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;        <span class="keywordflow">if</span> (!NT_SUCCESS(Status) &amp;&amp; Status != STATUS_BUFFER_OVERFLOW) {</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;            <span class="keywordflow">if</span> (bAllocateMem) {</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;                <a class="code" href="a00035.html#a11e5f86f5ec24b989012a66ead19ac73">UserRtlFreeMem</a>(*ppAnsiString);</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;            }</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;            <span class="keywordflow">return</span> 0;   <span class="comment">// translation failed</span></div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;        }</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160; </div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;        <span class="keywordflow">return</span> (<span class="keywordtype">int</span>)nCharsInAnsiString;</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160; </div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160; </div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;<span class="preprocessor">#ifdef _USERK_</span></div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;<span class="comment">         * Call GRE to convert string to Unicode. (Kernel mode)</span></div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;<span class="comment">         * I believe we will never hit this code which is why I am adding the</span></div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;<span class="comment">         * assert [gerritv] 5-21-96</span></div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160; </div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;        <a class="code" href="a00371.html#a162a73e20dfabca084a3ebb4581631a8">UserAssert</a>(FALSE);</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160; </div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;        iCharsInAnsiString = <a class="code" href="a00941.html#afb8cec12092b53635d1578c8185b1e3b">EngWideCharToMultiByte</a>(</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;                                 (<a class="code" href="a03608.html#afd1a0e78d1f88954d93e48ab3821781f">UINT</a>)wCodePage,</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;                                 (LPWSTR)pUnicodeString,</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;                                 cchUnicodeString * <span class="keyword">sizeof</span>(WCHAR),</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;                                 (LPSTR)*ppAnsiString,</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;                                 nAnsiChar);</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160; </div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;        nCharsInAnsiString = (iCharsInAnsiString == -1) ? 0 :</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;                                                          (ULONG) iCharsInAnsiString;</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160; </div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;<span class="comment">         * Call NLS API (Kernel32) to convert string to Unicode. (User mode)</span></div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;        nCharsInAnsiString = <a class="code" href="a00941.html#aaf8b3ae5e2b40b6de6cc9377d53baa45">WideCharToMultiByte</a>(</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;                                 (<a class="code" href="a03608.html#afd1a0e78d1f88954d93e48ab3821781f">UINT</a>)wCodePage, 0,</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;                                 (LPCWSTR)pUnicodeString,</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;                                 cchUnicodeString,</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;                                 (LPSTR)*ppAnsiString,</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;                                 nAnsiChar,</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;                                 NULL, NULL);</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;<span class="preprocessor">#endif // _USERK_</span></div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160; </div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;        <span class="keywordflow">if</span> (nCharsInAnsiString == 0) {</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;            <span class="keywordflow">if</span> (bAllocateMem) {</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;                <a class="code" href="a00035.html#a11e5f86f5ec24b989012a66ead19ac73">UserRtlFreeMem</a>(*ppAnsiString);</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;            }</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;        }</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160; </div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;        <span class="keywordflow">return</span> (<span class="keywordtype">int</span>)nCharsInAnsiString;</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;    }</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;}</div>
</div><!-- fragment -->
<p class="reference">引用了 <a class="el" href="a00941.html#afb8cec12092b53635d1578c8185b1e3b">EngWideCharToMultiByte()</a>, <a class="el" href="a00932.html#a64fbb83e8ca07b69c4724cbb1ae1ceb3">IS_ACP</a>, <a class="el" href="a03608.html#afd1a0e78d1f88954d93e48ab3821781f">UINT()</a>, <a class="el" href="a00950_source.html#l00117">UserAssert</a>, <a class="el" href="a00035_source.html#l01064">UserRtlAllocMem()</a>, <a class="el" href="a00035_source.html#l01070">UserRtlFreeMem()</a> , 以及 <a class="el" href="a00941.html#aaf8b3ae5e2b40b6de6cc9377d53baa45">WideCharToMultiByte()</a>.</p>

</div>
</div>
<a id="a75c1a992a8b7553edfca3a3bfb6d3539"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a75c1a992a8b7553edfca3a3bfb6d3539">&#9670;&nbsp;</a></span>MBToWCSEx()</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">int MBToWCSEx </td>
          <td>(</td>
          <td class="paramtype">WORD&#160;</td>
          <td class="paramname"><em>wCodePage</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">LPCSTR&#160;</td>
          <td class="paramname"><em>pAnsiString</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>nAnsiChar</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">LPWSTR *&#160;</td>
          <td class="paramname"><em>ppUnicodeString</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>cchUnicodeString</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">BOOL&#160;</td>
          <td class="paramname"><em>bAllocateMem</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">在文件 <a class="el" href="a00932_source.html">chartran.c</a> 第 <a class="el" href="a00932_source.html#l00190">190</a> 行定义.</p>
<div class="fragment"><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;{</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;    ULONG nBytesInUnicodeString;</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160; </div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;    <span class="keywordflow">if</span> (nAnsiChar == 0 || cchUnicodeString == 0) {</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;        <span class="keywordflow">return</span> 0;      <span class="comment">// nothing to translate or nowhere to put it</span></div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;    }</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160; </div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;<span class="comment">     * Adjust the nAnsiChar value.  If nAnsiChar == -1 then the</span></div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;<span class="comment">     * string pointed to by pAnsiString is NUL terminated so we</span></div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;<span class="comment">     * count the number of bytes.  If nAnsiChar &lt; -1 this is an</span></div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;<span class="comment">     * illegal value so we return FALSE.  Otherwise, nAnsiChar is</span></div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;<span class="comment">     * set and requires no adjustment.</span></div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;    <span class="keywordflow">if</span> (nAnsiChar == -1) {</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;        nAnsiChar = strlen(pAnsiString) + 1;   <span class="comment">// don&#39;t forget the NUL</span></div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (nAnsiChar &lt; -1) {</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;        <span class="keywordflow">return</span> 0;     <span class="comment">// illegal value</span></div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;    }</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160; </div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;<span class="comment">     * Adjust the cchUnicodeString value.  If cchUnicodeString == -1 then we</span></div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;<span class="comment">     * pick a value based on nAnsiChar to hold the converted string.  If</span></div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;<span class="comment">     * cchUnicodeString &lt; -1 this is an illegal value so we return FALSE.</span></div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;<span class="comment">     * Otherwise, cchUnicodeString is set and requires no adjustment.</span></div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    <span class="keywordflow">if</span> (cchUnicodeString == -1) {</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;        <span class="keywordflow">if</span> (bAllocateMem == FALSE) {</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;            <span class="keywordflow">return</span> 0;    <span class="comment">// no destination</span></div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;        }</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;        cchUnicodeString = nAnsiChar;</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (cchUnicodeString &lt; -1) {</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;        <span class="keywordflow">return</span> 0;     <span class="comment">// illegal value</span></div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;    }</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160; </div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;    <span class="keywordflow">if</span> (bAllocateMem) {</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;        *ppUnicodeString = (LPWSTR)<a class="code" href="a00035.html#aa4c5df31e4454c1b801c9cc8dc49ed7f">UserRtlAllocMem</a>(cchUnicodeString*<span class="keyword">sizeof</span>(WCHAR));</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;        <span class="keywordflow">if</span> (*ppUnicodeString == NULL) {</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;            <span class="keywordflow">return</span> 0;    <span class="comment">// allocation failed</span></div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;        }</div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;    }</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160; </div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;<span class="comment">     * if codepage is CP_ACP, We will call faster RtlXXX function.</span></div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="a00932.html#a64fbb83e8ca07b69c4724cbb1ae1ceb3">IS_ACP</a>(wCodePage)) {</div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;<span class="comment">         * translate ANSI string pointed to by pAnsiString into Unicode</span></div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;<span class="comment">         * and store in location pointed to by pUnicodeString.  We</span></div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;<span class="comment">         * stop translating when we fill up the Unicode buffer or reach</span></div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;<span class="comment">         * the end of the ANSI string.</span></div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;        <span class="keywordflow">if</span> (!NT_SUCCESS(RtlMultiByteToUnicodeN(</div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;                            (PWCH)*ppUnicodeString,</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;                            cchUnicodeString * <span class="keyword">sizeof</span>(WCHAR),</div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;                            &amp;nBytesInUnicodeString,</div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;                            (PCH)pAnsiString,</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;                            nAnsiChar</div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;                            ))) {</div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;            <span class="keywordflow">if</span> (bAllocateMem) {</div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;                <a class="code" href="a00035.html#a11e5f86f5ec24b989012a66ead19ac73">UserRtlFreeMem</a>(*ppUnicodeString);</div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;            }</div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;            <span class="keywordflow">return</span> 0;   <span class="comment">// translation failed</span></div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;        }</div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160; </div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;        <span class="keywordflow">return</span> (<span class="keywordtype">int</span>)(nBytesInUnicodeString / <span class="keyword">sizeof</span>(WCHAR));</div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160; </div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;<span class="comment">         * if wCodePage is not ACP, Call NLS API.</span></div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;        ULONG nCharsInUnicodeString;</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160; </div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;<span class="preprocessor">#ifdef _USERK_</span></div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;        <a class="code" href="a00953.html#a392e62da233ed3e2f7c3fd4f487a3896">INT</a>   iCharsInUnicodeString;</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160; </div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;<span class="comment">         * Call GRE to convert string to Unicode. (Kernel mode)</span></div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;<span class="comment">         * I believe we will never hit this code which is why I am</span></div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;<span class="comment">         * adding this assert.  [gerritv] 5-21-96</span></div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160; </div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;        <a class="code" href="a00371.html#a162a73e20dfabca084a3ebb4581631a8">UserAssert</a>(0);</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160; </div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;        iCharsInUnicodeString = <a class="code" href="a00941.html#a9f502fb57ef0f8e85c558dcf40e0cfd6">EngMultiByteToWideChar</a>(</div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;                                    (<a class="code" href="a03608.html#afd1a0e78d1f88954d93e48ab3821781f">UINT</a>)wCodePage,</div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;                                    (LPWSTR)*ppUnicodeString,</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;                                    (<span class="keywordtype">int</span>)cchUnicodeString * <span class="keyword">sizeof</span>(WCHAR),</div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;                                    (LPSTR)pAnsiString,</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;                                    (<span class="keywordtype">int</span>)nAnsiChar);</div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160; </div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;        nCharsInUnicodeString = (iCharsInUnicodeString == -1) ? 0 :</div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;                                                          (ULONG) iCharsInUnicodeString;</div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;<span class="comment">         * Call NLS API (Kernel32) to convert string to Unicode. (User mode)</span></div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;        nCharsInUnicodeString = <a class="code" href="a00941.html#ab5fefa29de8bde48a74efa8d838bf2d7">MultiByteToWideChar</a>(</div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;                                    (<a class="code" href="a03608.html#afd1a0e78d1f88954d93e48ab3821781f">UINT</a>)wCodePage, 0,</div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;                                    (LPCSTR)pAnsiString,</div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;                                    (<span class="keywordtype">int</span>)nAnsiChar,</div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;                                    (LPWSTR)*ppUnicodeString,</div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;                                    (<span class="keywordtype">int</span>)cchUnicodeString);</div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;<span class="preprocessor">#endif // _USERK_</span></div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160; </div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;        <span class="keywordflow">if</span> (nCharsInUnicodeString == 0) {</div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;            <span class="keywordflow">if</span> (bAllocateMem) {</div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;                <a class="code" href="a00035.html#a11e5f86f5ec24b989012a66ead19ac73">UserRtlFreeMem</a>(*ppUnicodeString);</div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;            }</div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;        }</div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160; </div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;        <span class="keywordflow">return</span> (<span class="keywordtype">int</span>)nCharsInUnicodeString;</div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;    }</div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160; </div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;}</div>
</div><!-- fragment -->
<p class="reference">引用了 <a class="el" href="a00941.html#a9f502fb57ef0f8e85c558dcf40e0cfd6">EngMultiByteToWideChar()</a>, <a class="el" href="a00932.html#a64fbb83e8ca07b69c4724cbb1ae1ceb3">IS_ACP</a>, <a class="el" href="a00941.html#ab5fefa29de8bde48a74efa8d838bf2d7">MultiByteToWideChar()</a>, <a class="el" href="a03608.html#afd1a0e78d1f88954d93e48ab3821781f">UINT()</a>, <a class="el" href="a00950_source.html#l00117">UserAssert</a>, <a class="el" href="a00035_source.html#l01064">UserRtlAllocMem()</a> , 以及 <a class="el" href="a00035_source.html#l01070">UserRtlFreeMem()</a>.</p>

<p class="reference">被这些函数引用 <a class="el" href="a00938_source.html#l00529">_wsprintf()</a>, <a class="el" href="a03218_source.html#l00112">DrawTextA()</a>, <a class="el" href="a03218_source.html#l00044">DrawTextExA()</a>, <a class="el" href="a03218_source.html#l00430">GetTabbedTextExtentA()</a>, <a class="el" href="a00248_source.html#l00794">StaticWndProcWorker()</a> , 以及 <a class="el" href="a03218_source.html#l00393">TabbedTextOutA()</a>.</p>

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<h2 class="memtitle"><span class="permalink"><a href="#a47585c80672490cbfb5c1bdd5f4cc874">&#9670;&nbsp;</a></span>RtlInitLargeAnsiString()</h2>

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<div class="memproto">
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        <tr>
          <td class="memname">VOID RtlInitLargeAnsiString </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="a00365.html#a30bfbeae5aa9511b0d3e797511eba5a9">PLARGE_ANSI_STRING</a>&#160;</td>
          <td class="paramname"><em>plstr</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">LPCSTR&#160;</td>
          <td class="paramname"><em>psz</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="a03608.html#afd1a0e78d1f88954d93e48ab3821781f">UINT</a>&#160;</td>
          <td class="paramname"><em>cchLimit</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">在文件 <a class="el" href="a00932_source.html">chartran.c</a> 第 <a class="el" href="a00932_source.html#l00559">559</a> 行定义.</p>
<div class="fragment"><div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;{</div>
<div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160;    ULONG Length;</div>
<div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160; </div>
<div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;    plstr-&gt;<a class="code" href="a02453.html#ab86c1361d2b0328124906122b7d1d922">Buffer</a> = (PSTR)psz;</div>
<div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160;    plstr-&gt;<a class="code" href="a02453.html#af4ab07640de8950ca1f439bb34be4b53">bAnsi</a> = TRUE;</div>
<div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160;    <span class="keywordflow">if</span> (ARGUMENT_PRESENT( psz )) {</div>
<div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;        Length = strlen( psz );</div>
<div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160;        plstr-&gt;<a class="code" href="a02453.html#abfb371817eb1c8f0d8a165bb2b798092">Length</a> = min(Length, cchLimit);</div>
<div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;        plstr-&gt;<a class="code" href="a02453.html#ad355c4270a8465c419a47e3e68098cf1">MaximumLength</a> = min((Length + 1), cchLimit);</div>
<div class="line"><a name="l00572"></a><span class="lineno">  572</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00573"></a><span class="lineno">  573</span>&#160;        plstr-&gt;<a class="code" href="a02453.html#ad355c4270a8465c419a47e3e68098cf1">MaximumLength</a> = 0;</div>
<div class="line"><a name="l00574"></a><span class="lineno">  574</span>&#160;        plstr-&gt;<a class="code" href="a02453.html#abfb371817eb1c8f0d8a165bb2b798092">Length</a> = 0;</div>
<div class="line"><a name="l00575"></a><span class="lineno">  575</span>&#160;    }</div>
<div class="line"><a name="l00576"></a><span class="lineno">  576</span>&#160;}</div>
</div><!-- fragment -->
<p class="reference">引用了 <a class="el" href="a00365_source.html#l00276">_LARGE_ANSI_STRING::bAnsi</a>, <a class="el" href="a00365_source.html#l00277">_LARGE_ANSI_STRING::Buffer</a>, <a class="el" href="a00365_source.html#l00274">_LARGE_ANSI_STRING::Length</a> , 以及 <a class="el" href="a00365_source.html#l00275">_LARGE_ANSI_STRING::MaximumLength</a>.</p>

<p class="reference">被这些函数引用 <a class="el" href="a03611_source.html#l01360">_CreateWindowEx()</a>, <a class="el" href="a03611_source.html#l01291">_DefSetText()</a>, <a class="el" href="a03611_source.html#l01828">MESSAGECALL()</a> , 以及 <a class="el" href="a00635_source.html#l00031">xxxCreateWindowExWOW()</a>.</p>

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<h2 class="memtitle"><span class="permalink"><a href="#a4dddfac60ddaa5a11f91719826b7b270">&#9670;&nbsp;</a></span>RtlInitLargeUnicodeString()</h2>

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<div class="memproto">
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        <tr>
          <td class="memname">VOID RtlInitLargeUnicodeString </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="a00365.html#a426c6d3b3fa0c69f73b55f476602e672">PLARGE_UNICODE_STRING</a>&#160;</td>
          <td class="paramname"><em>plstr</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">LPCWSTR&#160;</td>
          <td class="paramname"><em>psz</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="a03608.html#afd1a0e78d1f88954d93e48ab3821781f">UINT</a>&#160;</td>
          <td class="paramname"><em>cchLimit</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">在文件 <a class="el" href="a00932_source.html">chartran.c</a> 第 <a class="el" href="a00932_source.html#l00587">587</a> 行定义.</p>
<div class="fragment"><div class="line"><a name="l00591"></a><span class="lineno">  591</span>&#160;{</div>
<div class="line"><a name="l00592"></a><span class="lineno">  592</span>&#160;    ULONG Length;</div>
<div class="line"><a name="l00593"></a><span class="lineno">  593</span>&#160; </div>
<div class="line"><a name="l00594"></a><span class="lineno">  594</span>&#160;    plstr-&gt;<a class="code" href="a02457.html#a99314e2f6ea6b552b9538bbe7b7e64ba">Buffer</a> = (PWSTR)psz;</div>
<div class="line"><a name="l00595"></a><span class="lineno">  595</span>&#160;    plstr-&gt;<a class="code" href="a02457.html#af4ab07640de8950ca1f439bb34be4b53">bAnsi</a> = FALSE;</div>
<div class="line"><a name="l00596"></a><span class="lineno">  596</span>&#160;    <span class="keywordflow">if</span> (ARGUMENT_PRESENT( psz )) {</div>
<div class="line"><a name="l00597"></a><span class="lineno">  597</span>&#160;        Length = wcslen( psz ) * <span class="keyword">sizeof</span>( WCHAR );</div>
<div class="line"><a name="l00598"></a><span class="lineno">  598</span>&#160;        plstr-&gt;<a class="code" href="a02457.html#abfb371817eb1c8f0d8a165bb2b798092">Length</a> = min(Length, cchLimit);</div>
<div class="line"><a name="l00599"></a><span class="lineno">  599</span>&#160;        plstr-&gt;<a class="code" href="a02457.html#ad355c4270a8465c419a47e3e68098cf1">MaximumLength</a> = min((Length + <span class="keyword">sizeof</span>(UNICODE_NULL)), cchLimit);</div>
<div class="line"><a name="l00600"></a><span class="lineno">  600</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00601"></a><span class="lineno">  601</span>&#160;        plstr-&gt;<a class="code" href="a02457.html#ad355c4270a8465c419a47e3e68098cf1">MaximumLength</a> = 0;</div>
<div class="line"><a name="l00602"></a><span class="lineno">  602</span>&#160;        plstr-&gt;<a class="code" href="a02457.html#abfb371817eb1c8f0d8a165bb2b798092">Length</a> = 0;</div>
<div class="line"><a name="l00603"></a><span class="lineno">  603</span>&#160;    }</div>
<div class="line"><a name="l00604"></a><span class="lineno">  604</span>&#160;}</div>
</div><!-- fragment -->
<p class="reference">引用了 <a class="el" href="a00365_source.html#l00283">_LARGE_UNICODE_STRING::bAnsi</a>, <a class="el" href="a00365_source.html#l00284">_LARGE_UNICODE_STRING::Buffer</a>, <a class="el" href="a00365_source.html#l00281">_LARGE_UNICODE_STRING::Length</a> , 以及 <a class="el" href="a00365_source.html#l00282">_LARGE_UNICODE_STRING::MaximumLength</a>.</p>

<p class="reference">被这些函数引用 <a class="el" href="a03611_source.html#l01360">_CreateWindowEx()</a>, <a class="el" href="a03611_source.html#l01291">_DefSetText()</a>, <a class="el" href="a00095_source.html#l00176">InternalCreateDialog()</a>, <a class="el" href="a03611_source.html#l01828">MESSAGECALL()</a>, <a class="el" href="a00356_source.html#l00957">SendNotifyMessage()</a>, <a class="el" href="a00647_source.html#l00017">xxxCsDdeInitialize()</a>, <a class="el" href="a00185_source.html#l00681">xxxDlgDirSelectHelper()</a>, <a class="el" href="a00842_source.html#l02852">xxxProcessAsyncSendMessage()</a>, <a class="el" href="a00200_source.html#l00061">xxxSetFrameTitle()</a> , 以及 <a class="el" href="a00827_source.html#l01195">xxxSystemParametersInfo()</a>.</p>

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<h2 class="memtitle"><span class="permalink"><a href="#a422181d432442f3ca223ed68ff5585fb">&#9670;&nbsp;</a></span>RtlMBMessageWParamCharToWCS()</h2>

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          <td class="memname">BOOL RtlMBMessageWParamCharToWCS </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="a00563.html#a074685e97e89d6aa2accdfcb82328699">DWORD</a>&#160;</td>
          <td class="paramname"><em>msg</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">PDWORD&#160;</td>
          <td class="paramname"><em>pWParam</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">在文件 <a class="el" href="a00932_source.html">chartran.c</a> 第 <a class="el" href="a00932_source.html#l00442">442</a> 行定义.</p>
<div class="fragment"><div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;{</div>
<div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;    <a class="code" href="a00563.html#a074685e97e89d6aa2accdfcb82328699">DWORD</a> dwUni;</div>
<div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;    NTSTATUS Status;</div>
<div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;<span class="preprocessor">#ifdef FE_SB // RtlMBMessageWParamCharToWCS()</span></div>
<div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;    BOOL  bWmCrIrDbcsChar = FALSE;</div>
<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;    WORD  wAnsi = LOWORD(*pWParam);</div>
<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;<span class="preprocessor">#endif // FE_SB</span></div>
<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;    WORD CodePage = <a class="code" href="a00932.html#a23d6d6764e9a49ac3cb76454ef6b8782">THREAD_CODEPAGE</a>();</div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160; </div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;<span class="comment">     * Only these messages have CHARs: others are passed through</span></div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160; </div>
<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;    <span class="keywordflow">switch</span>(msg) {</div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;<span class="preprocessor">#ifdef FE_SB // RtlMBMessageWParamCharToWCS()</span></div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;    <span class="keywordflow">case</span> WM_CHAR:</div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;        <span class="comment">// WM_CHAR&#39;s wParam format for WM_IME_REPORT:IR_DBCSCHAR</span></div>
<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;        <span class="keywordflow">if</span> (*pWParam &amp; WMCR_IR_DBCSCHAR) {</div>
<div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;            <span class="comment">//</span></div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;            <span class="comment">// Mark this message is sent as IR_DBCSCHAR format.</span></div>
<div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;            <span class="comment">//</span></div>
<div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;            bWmCrIrDbcsChar = TRUE;</div>
<div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;        }</div>
<div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160; </div>
<div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;        <span class="comment">// Fall through....</span></div>
<div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;    <span class="keywordflow">case</span> WM_IME_CHAR:</div>
<div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;    <span class="keywordflow">case</span> WM_IME_COMPOSITION:</div>
<div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;        <span class="comment">// We need to re-align for Unicode convertsion..</span></div>
<div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;        <span class="comment">// WM_CHAR/WM_IME_CHAR/WM_IME_COMPOSITION&#39;s wParam format :</span></div>
<div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;        <span class="comment">// ReAlign IR_DBCS char format to regular sequence.</span></div>
<div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;        <span class="comment">// From:</span></div>
<div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;        <span class="comment">//  HIWORD(wParam)         = 0;</span></div>
<div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;        <span class="comment">//  HIBYTE(LOWORD(wParam)) = DBCS LeadingByte.</span></div>
<div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;        <span class="comment">//  LOBYTE(LOWORD(wParan)) = DBCS TrailingByte or SBCS character.</span></div>
<div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;        <span class="comment">// To:</span></div>
<div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;        <span class="comment">//  HIWORD(wParam)         = 0;</span></div>
<div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;        <span class="comment">//  HIBYTE(LOWORD(wParam)) = DBCS TrailingByte.</span></div>
<div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;        <span class="comment">//  LOBYTE(LOWORD(wParam)) = DBCS LeadingByte or SBCS character.</span></div>
<div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;        *pWParam = MAKE_WPARAM_DBCSCHAR(wAnsi);</div>
<div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160; </div>
<div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;        <span class="comment">// Fall through...</span></div>
<div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;    <span class="keywordflow">case</span> WM_CHAR:</div>
<div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;<span class="preprocessor">#endif // FE_SB</span></div>
<div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;    <span class="keywordflow">case</span> WM_CHARTOITEM:</div>
<div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;    <span class="keywordflow">case</span> EM_SETPASSWORDCHAR:</div>
<div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;    <span class="keywordflow">case</span> WM_DEADCHAR:</div>
<div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;    <span class="keywordflow">case</span> WM_SYSCHAR:</div>
<div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;    <span class="keywordflow">case</span> WM_SYSDEADCHAR:</div>
<div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;    <span class="keywordflow">case</span> WM_MENUCHAR:</div>
<div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160; </div>
<div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;        dwUni = 0;</div>
<div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160; </div>
<div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;        <span class="keywordflow">if</span> (<a class="code" href="a00932.html#a64fbb83e8ca07b69c4724cbb1ae1ceb3">IS_ACP</a>(CodePage)) {</div>
<div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;            Status = RtlMultiByteToUnicodeN((LPWSTR)&amp;dwUni, <span class="keyword">sizeof</span>(dwUni),</div>
<div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;                    NULL, (LPSTR)pWParam, 2 * <span class="keyword">sizeof</span>(<a class="code" href="a00953.html#aebb9e13210d88d43e32e735ada43a425">CHAR</a>));</div>
<div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;            <span class="keywordflow">if</span> (!NT_SUCCESS(Status))</div>
<div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;                <span class="keywordflow">return</span> FALSE;</div>
<div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00514"></a><span class="lineno">  514</span>&#160;            <span class="keywordtype">int</span> cwch;</div>
<div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160;<span class="preprocessor">#ifdef _USERK_</span></div>
<div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;            cwch = <a class="code" href="a00941.html#a9f502fb57ef0f8e85c558dcf40e0cfd6">EngMultiByteToWideChar</a>(CodePage,</div>
<div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;                    (LPWSTR)&amp;dwUni, <span class="keyword">sizeof</span>(dwUni) / <span class="keyword">sizeof</span>(WCHAR),</div>
<div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;                    (LPSTR)pWParam, 2);</div>
<div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;            cwch = <a class="code" href="a00941.html#ab5fefa29de8bde48a74efa8d838bf2d7">MultiByteToWideChar</a>(CodePage, 0,</div>
<div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;                    (LPSTR)pWParam, 2,</div>
<div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;                    (LPWSTR)&amp;dwUni, <span class="keyword">sizeof</span>(dwUni) / <span class="keyword">sizeof</span>(WCHAR));</div>
<div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160;<span class="preprocessor">#endif // _USERK_</span></div>
<div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;            <span class="comment">// KdPrint((&quot;0x%02x -&gt; 0x%04x (%d)\n&quot;, *pWParam, dwUni, CodePage));</span></div>
<div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;            <span class="keywordflow">if</span> (cwch == 0) {</div>
<div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160;                <span class="keywordflow">return</span> FALSE;</div>
<div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160;            }</div>
<div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160;        }</div>
<div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160; </div>
<div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160;<span class="preprocessor">#ifdef FE_SB // RtlMBMessageWParamCharToWCS</span></div>
<div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160;        <span class="comment">// if this character is sent for WM_IME_REPORT:IR_DBCSCHAR, we mark it.</span></div>
<div class="line"><a name="l00533"></a><span class="lineno">  533</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160;        <span class="keywordflow">if</span> (bWmCrIrDbcsChar)</div>
<div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;            dwUni |= WMCR_IR_DBCSCHAR;</div>
<div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;<span class="preprocessor">#ifdef DEBUG</span></div>
<div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160;        <span class="keywordflow">if</span> ((dwUni == 0) || (dwUni &gt; 0xFF)) {</div>
<div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160;            <a class="code" href="a00371.html#a31aafffb49dfe98bdc749c9b35c90162">RIPMSG1</a>(<a class="code" href="a00371.html#ad6b24a3d61abdc148c8751b5c5add686">RIP_VERBOSE</a>, <span class="stringliteral">&quot;msgA -&gt; msgW: wchar = 0x%lX\n&quot;</span>, dwUni);</div>
<div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160;        }</div>
<div class="line"><a name="l00541"></a><span class="lineno">  541</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;<span class="preprocessor">#endif // FE_SB</span></div>
<div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160;        *pWParam = dwUni;</div>
<div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;        <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160;    }</div>
<div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160; </div>
<div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;    <span class="keywordflow">return</span> TRUE;</div>
<div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;}</div>
</div><!-- fragment -->
<p class="reference">引用了 <a class="el" href="a00563_source.html#l00175">DWORD</a>, <a class="el" href="a00941.html#a9f502fb57ef0f8e85c558dcf40e0cfd6">EngMultiByteToWideChar()</a>, <a class="el" href="a00932.html#a64fbb83e8ca07b69c4724cbb1ae1ceb3">IS_ACP</a>, <a class="el" href="a00941.html#ab5fefa29de8bde48a74efa8d838bf2d7">MultiByteToWideChar()</a>, <a class="el" href="a00371_source.html#l00030">RIP_VERBOSE</a>, <a class="el" href="a00371_source.html#l00132">RIPMSG1</a> , 以及 <a class="el" href="a00932.html#a23d6d6764e9a49ac3cb76454ef6b8782">THREAD_CODEPAGE</a>.</p>

<p class="reference">被这些函数引用 <a class="el" href="a00356_source.html#l01480">CallMsgFilter()</a>, <a class="el" href="a00041_source.html#l01712">DispatchMessageWorker()</a>, <a class="el" href="a00104_source.html#l00213">IsDialogMessageA()</a>, <a class="el" href="a03611_source.html#l01579">MESSAGECALL()</a>, <a class="el" href="a00356_source.html#l00471">PostMessage()</a>, <a class="el" href="a00356_source.html#l00534">PostThreadMessage()</a>, <a class="el" href="a00356_source.html#l00917">SendMessageCallback()</a>, <a class="el" href="a00041_source.html#l00258">SendMessageWorker()</a>, <a class="el" href="a00356_source.html#l00957">SendNotifyMessage()</a>, <a class="el" href="a00026_source.html#l00162">TranslateAcceleratorA()</a> , 以及 <a class="el" href="a03290_source.html#l00702">xxxDispatchMessage()</a>.</p>

</div>
</div>
<a id="a541a4d80afc3abe77692be2160e0f354"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a541a4d80afc3abe77692be2160e0f354">&#9670;&nbsp;</a></span>RtlWCSMessageWParamCharToMB()</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">BOOL RtlWCSMessageWParamCharToMB </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="a00563.html#a074685e97e89d6aa2accdfcb82328699">DWORD</a>&#160;</td>
          <td class="paramname"><em>msg</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">PDWORD&#160;</td>
          <td class="paramname"><em>pWParam</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">在文件 <a class="el" href="a00932_source.html">chartran.c</a> 第 <a class="el" href="a00932_source.html#l00323">323</a> 行定义.</p>
<div class="fragment"><div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;{</div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;    <a class="code" href="a00563.html#a074685e97e89d6aa2accdfcb82328699">DWORD</a> dwAnsi;</div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;<span class="preprocessor">#ifdef FE_SB</span></div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;    WORD wAnsi;</div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;    NTSTATUS Status;</div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;    WORD CodePage = <a class="code" href="a00932.html#a23d6d6764e9a49ac3cb76454ef6b8782">THREAD_CODEPAGE</a>();</div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160; </div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;<span class="comment">     * Only these messages have CHARs: others are passed through</span></div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160; </div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;    <span class="keywordflow">switch</span>(msg) {</div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;<span class="preprocessor">#ifdef FE_IME // RtlWCSMessageWParamCharToMB()</span></div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;    <span class="keywordflow">case</span> WM_IME_CHAR:</div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;    <span class="keywordflow">case</span> WM_IME_COMPOSITION:</div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;<span class="preprocessor">#endif // FE_IME</span></div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;    <span class="keywordflow">case</span> WM_CHAR:</div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;    <span class="keywordflow">case</span> WM_CHARTOITEM:</div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;    <span class="keywordflow">case</span> EM_SETPASSWORDCHAR:</div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;    <span class="keywordflow">case</span> WM_DEADCHAR:</div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;    <span class="keywordflow">case</span> WM_SYSCHAR:</div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;    <span class="keywordflow">case</span> WM_SYSDEADCHAR:</div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;    <span class="keywordflow">case</span> WM_MENUCHAR:</div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160; </div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;        dwAnsi = 0;</div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160; </div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;<span class="preprocessor">#ifdef FE_SB // RtlWCSMessageWParamCharToMB()</span></div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;<span class="comment">// Format of *pWParam here...</span></div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;<span class="comment">// LOWORD(*pWParam) = Unicode CodePoint...</span></div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;<span class="comment">// HIWORD(*pWParam) = Has some information for DBCS messaging</span></div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;<span class="comment">//                    (ex. WPARAM_IR_DBCSCHAR)</span></div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;<span class="comment">// Then we need to convert ONLY loword of wParam to Unicode...</span></div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;<span class="preprocessor">#define NWCH 1</span></div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;<span class="preprocessor">#define NWCH 2</span></div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;<span class="preprocessor">#endif // FE_SB</span></div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160; </div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;        <span class="keywordflow">if</span> (<a class="code" href="a00932.html#a64fbb83e8ca07b69c4724cbb1ae1ceb3">IS_ACP</a>(CodePage)) {</div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;            Status = RtlUnicodeToMultiByteN((LPSTR)&amp;dwAnsi, <span class="keyword">sizeof</span>(dwAnsi),</div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;                    NULL, (LPWSTR)pWParam, <a class="code" href="a00932.html#a00abbc2e24d5fa7f95368fca65306e10">NWCH</a> * <span class="keyword">sizeof</span>(WCHAR));</div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;            <span class="keywordflow">if</span> (!NT_SUCCESS(Status)) {</div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;                <span class="comment">// LATER IanJa: returning FALSE makes GetMessage fail, which</span></div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;                <span class="comment">// terminates the app.  We should use some default &#39;bad character&#39;</span></div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;                <span class="comment">// I use 0x00 for now.</span></div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;                *pWParam = 0x00;</div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;                <span class="keywordflow">return</span> TRUE;</div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;            }</div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;            <span class="keywordtype">int</span> cwch;</div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;<span class="preprocessor">#ifdef _USERK_</span></div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;            cwch = <a class="code" href="a00941.html#afb8cec12092b53635d1578c8185b1e3b">EngWideCharToMultiByte</a>(CodePage,</div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;                    (LPWSTR)pWParam, <a class="code" href="a00932.html#a00abbc2e24d5fa7f95368fca65306e10">NWCH</a>,</div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;                    (LPSTR)&amp;dwAnsi, <span class="keyword">sizeof</span>(dwAnsi));</div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;            cwch = <a class="code" href="a00941.html#aaf8b3ae5e2b40b6de6cc9377d53baa45">WideCharToMultiByte</a>(CodePage, 0,</div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;                    (LPCWSTR)pWParam, <a class="code" href="a00932.html#a00abbc2e24d5fa7f95368fca65306e10">NWCH</a>,</div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;                    (LPSTR)&amp;dwAnsi, <span class="keyword">sizeof</span>(dwAnsi), NULL, NULL);</div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;<span class="preprocessor">#endif // _USERK_</span></div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;            <span class="comment">// KdPrint((&quot;0x%04x -&gt; 0x%02x (%d)\n&quot;, *pWParam, dwAnsi, CodePage));</span></div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;            <span class="keywordflow">if</span> (cwch == 0) {</div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;                *pWParam = 0x00;</div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;                <span class="keywordflow">return</span> TRUE;</div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;            }</div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;        }</div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;<span class="preprocessor">#ifdef FE_SB // RtlWCSMessageWParamCharToMB()</span></div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;        wAnsi = LOWORD(dwAnsi);</div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;        <span class="comment">// From:</span></div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;        <span class="comment">//   HIBYTE(wAnsi)            = Dbcs TrailingByte.</span></div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;        <span class="comment">//   LOBYTE(wAnsi)            = Dbcs LeadingByte or Sbcs character.</span></div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;        <span class="comment">// To:</span></div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;        <span class="comment">//   HIWORD(*pWParam)         = Original Data (information for DBCS messgaing).</span></div>
<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;        <span class="comment">//   HIBYTE(LOWORD(*pWParam)) = Dbcs LeadingByte Byte.</span></div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;        <span class="comment">//   LOBYTE(LOWORD(*pWParam)) = Dbcs TrailingByte or Sbcs character.</span></div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;        <span class="keywordflow">if</span> (IS_DBCS_MESSAGE(wAnsi)) {</div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;            <span class="comment">//</span></div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;            <span class="comment">// It&#39;s a DBCS character.</span></div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;            <span class="comment">//</span></div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;            *pWParam = MAKEWPARAM(MAKEWORD(HIBYTE(wAnsi),LOBYTE(wAnsi)),HIWORD(*pWParam));</div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;            <span class="comment">//</span></div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;            <span class="comment">// It&#39;s a SBCS character.</span></div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;            <span class="comment">//</span></div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;            *pWParam = MAKEWPARAM(MAKEWORD(LOBYTE(wAnsi),0),0);</div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;        }</div>
<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;        <span class="comment">// LATER!!!; in product 2 handle DBCS correctly.</span></div>
<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;<span class="preprocessor">#ifdef DEBUG</span></div>
<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;        <span class="keywordflow">if</span> ((dwAnsi == 0) || (dwAnsi &gt; 0xFF)) {</div>
<div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;            <a class="code" href="a00371.html#a31aafffb49dfe98bdc749c9b35c90162">RIPMSG1</a>(<a class="code" href="a00371.html#ad6b24a3d61abdc148c8751b5c5add686">RIP_VERBOSE</a>, <span class="stringliteral">&quot;msgW -&gt; msgA: char = 0x%.4lX\n&quot;</span>, dwAnsi);</div>
<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;        }</div>
<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;        *pWParam = dwAnsi;</div>
<div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;<span class="preprocessor">#endif // FE_SB</span></div>
<div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;        <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;    }</div>
<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160; </div>
<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;    <span class="keywordflow">return</span> TRUE;</div>
<div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;}</div>
</div><!-- fragment -->
<p class="reference">引用了 <a class="el" href="a00563_source.html#l00175">DWORD</a>, <a class="el" href="a00941.html#afb8cec12092b53635d1578c8185b1e3b">EngWideCharToMultiByte()</a>, <a class="el" href="a00932.html#a64fbb83e8ca07b69c4724cbb1ae1ceb3">IS_ACP</a>, <a class="el" href="a00932.html#a00abbc2e24d5fa7f95368fca65306e10">NWCH</a>, <a class="el" href="a00371_source.html#l00030">RIP_VERBOSE</a>, <a class="el" href="a00371_source.html#l00132">RIPMSG1</a>, <a class="el" href="a00932.html#a23d6d6764e9a49ac3cb76454ef6b8782">THREAD_CODEPAGE</a> , 以及 <a class="el" href="a00941.html#aaf8b3ae5e2b40b6de6cc9377d53baa45">WideCharToMultiByte()</a>.</p>

<p class="reference">被这些函数引用 <a class="el" href="a03611_source.html#l00680">_PeekMessage()</a>, <a class="el" href="a00041_source.html#l01712">DispatchMessageWorker()</a>, <a class="el" href="a00356_source.html#l00276">GetMessage()</a>, <a class="el" href="a00041_source.html#l00258">SendMessageWorker()</a> , 以及 <a class="el" href="a03290_source.html#l00702">xxxDispatchMessage()</a>.</p>

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<div class="ttc" id="aa02453_html_ab86c1361d2b0328124906122b7d1d922"><div class="ttname"><a href="a02453.html#ab86c1361d2b0328124906122b7d1d922">_LARGE_ANSI_STRING::Buffer</a></div><div class="ttdeci">PSTR Buffer</div><div class="ttdef"><b>Definition:</b> <a href="a00365_source.html#l00277">user.h:277</a></div></div>
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<div class="ttc" id="aa03608_html_afd1a0e78d1f88954d93e48ab3821781f"><div class="ttname"><a href="a03608.html#afd1a0e78d1f88954d93e48ab3821781f">UINT</a></div><div class="ttdeci">typedef UINT(FAR WINAPI *MSGSOUNDPROC)()</div></div>
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